It would help to post your carrier, or better yet to put that information in your profile.

Sorry, I don't have any of those issues, nor have I seen them mentioned.

 

Unfortunately, T-Mobile covers both Europe and the U.S. and includes at least 2 models of the S4 and a great many different firmwares.

Could you give your, "Version" and "Firmware", details, as per #1.2 and #1.3 of 18 Galaxy S4 models - know yours? as this is a more accurate and reliable way of getting your phone information as replies may be dependent on this.

 

Noob or not... how to obtain your firmware details is in my last post! Help us to help you.

 

That is strange that that feature is disabled on stock Samsung firmware. Are you able to bring up, say, your IMEI no: by entering *#06# into the dial pad?

 

I have US Sprint version, and the 2 biggest problems I've had since the initial 4.3 update are my battery draining very fast (much faster than before the update), my WIFI connection is suddenly unstable (I get the message saying connection is unstable, again never had this before the update), and I've experienced an increase in dropped calls and occasional bad call quality (sounds like talking into a tin can). None of these were apparent before upgrading to 4.3.

I just saw the MK2 update on my phone, I'll install it shortly and hopefully this will fix these issues. I've read the initial 4.3 update wreaked havoc on many other carrier's version of the S4 (especially Verizon)